Listened to this last night ...
The idea is.. Smart Fuel Cells (sfc.com) has a range of fuel cell technology and is aiming to enter the market for light EV usage. Their fuel cells do not deliver the full power required to run an EV and instead their fuel cells deliver a consistent low wattage. This means you can ride your EV to work, and just park it, and the fuel cell takes care of charging the battery, but don't expect the fuel cell to provide the full power you need for riding in traffic. Their fuel cell is low enough power that it doesn't make sense for use on a large vehicle like a car, because it would require 5 days to charge up the battery pack. But for a smaller vehicle it works okay.
That's my summary of the podcast above.